- Dei, Johannes de, ca. 1190-1267.1
- Dominicans.1
- Donatus, Aelius.2
- England.1
- Epiphanius, Scholasticus.1
- Ermengaud, Matfre, active 1288-13221
- Eugippius.2
- Evrard, de Béthune.1
- Ferdinandez, Petrus.1
- Franciscans1
- Freisinger Domkloster.1
- Fulgentius, Saint, Bishop of Ruspa, 468-533.1
- Gherardo, da Cremona, 1113 or 1114-11871
- Gilbert, de La Porrée, Bishop, ca. 1075-1154.1
- Gottschalk, of Orbais, approximately 803-approximately 867.1
- Gower, John, 1325?-1408.1
- Gratian, active 12th century1
- Gratian, active 12th century.1
- Gregory I, Pope, approximately 540-604.17
- Gregory IX, Pope, approximately 1170-1241.2